Arithmetic Series - Ambitious

Question 1: What is the common difference in the following arithmetic series:

2.5, 6.4, 10.3, ...

?

A

3.2

B

2.56

C

7.8

D

3.9

Question 2: Which of the following sequences is an arithmetic series?

A

0.125, 0.250, 0.38, 0.515, 0.655

B

17.5, 15, 12.5, 10, 7.5

C

16, 8, 4, 2, 1

D

1, 2, 3, 5, 8, 13

Question 3: What is the

25

th term in the following arithmetic series:

1, 4, 7, 10...

?

A

72

B

75

C

74

D

73

Question 4: What is the

31

st term in the following arithmetic series:

45, 42.5, 40...

?

A

- 31.75

B

- 27.25

C

110

D

- 30

Question 5: What is the sum of the first

21

terms in the following arithmetic series:

3,5,7,9

?

A

S_{21} = 368

B

S_{21} = 483

C

S_{21} = 241

D

S_{21} = 512

Test: Arithmetic Series - Ambitious